Maker Pro
Maker Pro

Forward/Reverse SWR meter.



Jan 1, 1970
SWR meter with badly damaged galvanometer.

Meter deflects (what little is left of it!) and appears to be about 30
to 50 micro amps FSD.

Have a replacement galvanometer that fits perfectly but has about one
fifth sensitivity.

The replacement has at least a 250 microamp FSD movement; maybe even
500 micro amps! Intend to do more precise measurement.

But regardless; could one add a small DC amplifier to increase the
current feeding the galvo. and then calibrate it to deflect the meter

Aso adding a small battery and battery switch to power the DC
amplifier unit which would only need to be switched on when doing

Advice/possible circuit appreciated.